/*
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.spice.persistenence.service;

import static org.spice.core.validation.Assert.ifItFails;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

import org.spice.persistence.exception.ServiceLocatorException;
/**
 * 
 * @author Karthik Rajkumar
 * @since RED-CHILLIES Version
 *
 */
public
abstract class ServiceLookup implements IServiceLookup{
	
		


	/**
	 * Getting the data source 
	 * @return
	 * @throws ServiceLocatorException 
	 */
	public 
	DataSource getDataSource(final String jndiLookup) throws ServiceLocatorException {
		ifItFails(jndiLookup, "The JNDI Name cannot be empty");
		
		InitialContext context = null;
		try {
			context = new InitialContext();
			return (DataSource) context.lookup(jndiLookup);
		} catch (NamingException e) {
			throw new ServiceLocatorException(e.getMessage());
		}finally{
			try {
				context.close();
			} catch (NamingException e) {
				throw new ServiceLocatorException("Cannot close the context");
			}
		}
	}
	
	public
	Connection getConnection(){
		return null;
		
	}
	
	
	protected 
	void clearConnection(Connection connection, ResultSet resultSet) {
		try {
			if(null != resultSet)
				resultSet.close();
			
			if(null != connection)
				connection.close();
			
			resultSet.clearWarnings();
		} catch (SQLException e) {
			
		}
		
		
	}
}
